High-tightness civil air defense door device

Abstract

The utility model relates to the technical field of adjusting support, concretely to a high airtightness civil air defence door device. The utility model discloses door frame and door leaf, the inside of door leaf is equipped with adjusting device, the adjusting device includes flange bearing and two racks, the circular arc surface of flange bearing is fixedly connected with door leaf, the inboard fixedly connected with the shaft of flange bearing, one end fixedly connected with the gear of the shaft, the outside of gear is engaged with two racks, one end fixedly connected with the connecting plate of rack, one end fixedly connected with the moving plate of connecting plate, one side of two moving plates is connected with door leaf slidingly. The traditional high airtightness civil air defence door device basically adopts single point locking structure, when single point locking, impact force (such as explosion shock wave) concentrates on single locking point, causes door leaf to bear non-uniform load, and the problem that partial door leaf is easily caused to be recessed or locking point welding place fatigue fracture.

Description

Technical Field

[0001] This utility model relates to the field of adjustable bracket technology, and in particular to a high-sealing air defense door device. Background Technology

[0002] High-sealing air defense door devices refer to a special type of door equipment used at the entrances and exits of civil air defense projects (such as air defense basements, underground bunkers, etc.). Its core function is to resist external impacts (such as explosive shock waves, nuclear radiation, biological and chemical weapons, etc.) and prevent toxic and harmful substances, noise, airflow, etc. from entering the internal space during wartime or emergency situations through high-strength structural design and extreme sealing performance, thereby ensuring the safety of personnel and materials.

[0003] In the existing technology, high-sealing air defense door devices basically adopt a single-point locking structure. When locking at a single point, the impact force (such as the shock wave of an explosion) is concentrated on a single locking point, causing the door leaf to bear non-uniform load, which can easily cause local dents in the door leaf or fatigue fracture at the locking point weld. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing high-sealing air defense door devices, which primarily employ a single-point locking structure, where impact forces (such as blast shock waves) are concentrated on a single locking point during single-point locking. Therefore, this invention proposes a high-sealing air defense door device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a high-sealing air defense door device, comprising a door frame and a door leaf, wherein the door leaf is provided with an adjustment device, the adjustment device comprising a flange bearing and two racks, the arc surface of the flange bearing being fixedly connected to the door leaf, a rotating shaft being fixedly connected to the inner side of the flange bearing, a gear being fixedly connected to one end of the rotating shaft, the gear meshing with the two racks on the outside, a connecting plate being fixedly connected to one end of the racks, a moving plate being fixedly connected to one end of the connecting plate, one side of the two moving plates being slidably connected to the door leaf, a plurality of locking rods being fixedly connected to one side of the moving plate, the plurality of locking rods being evenly distributed on the moving plate, the arc surface of the plurality of locking rods being slidably connected to the door frame, and a rotating block being fixedly connected to one end of the gear.

[0006] The effect achieved by the above components is that the rotating block rotates, causing the gear to rotate, which in turn causes the rack to move and the connecting plate to move, which in turn causes the moving plate to move the locking rod away from or towards the door frame.

[0007] Preferably, a connecting rod is fixedly connected to the arc surface of the rotating block.

[0008] The effect achieved by the above components is that the connecting rod is fixed on the rotating block.

[0009] Preferably, the arc surface of the connecting rod is interference-fitted with a rubber groove plate, and one side of the rubber groove plate is fixedly connected to the door leaf.

[0010] The effect achieved by the above components is that the connecting rod is fitted inside the rubber groove plate, preventing the connecting rod from moving.

[0011] Preferably, two telescopic rods are fixedly connected to one side of the movable plate, one end of the two telescopic rods is fixedly connected to a fixed plate, and one side of the two fixed plates is fixedly connected to the door leaf.

[0012] The effect achieved by the above components is to enable the moving plate to extend or retract the output end of the telescopic rod, thereby preventing the moving plate from shifting position during movement.

[0013] Preferably, the arc surfaces of several locking rods are slidably connected to limit plates, and one side of two of the limit plates is fixedly connected to the door leaf.

[0014] The effect achieved by the above components is that the limiting plate and the locking rod are matched to prevent the locking rod from shifting position during movement.

[0015] Preferably, a protective device is provided on one side of the door leaf. The protective device includes a U-shaped plate, one side of which is fixedly connected to the door leaf. Four retractable rods are fixedly connected to one side of the U-shaped plate, and baffles are fixedly connected to the output ends of the four retractable rods.

[0016] The effect achieved by the above components is that the output end of the retraction rod retracts due to the force applied to the baffle.

[0017] Preferably, the arc surface of the retractable rod is fitted with a spring, and the two ends of the four springs are respectively fixedly connected to the U-shaped plate and the baffle.

[0018] The effect achieved by the above components is to prevent the spring from deforming during the contraction process.

[0019] Preferably, two rubber plates are fixedly connected to one side of the baffle.

[0020] The effect achieved by the above components is to fix the rubber sheet to the baffle.

[0021] Preferably, a buffer pad is fixedly connected to one side of the baffle, and a protective plate is fixedly connected to one side of the buffer pad.

[0022] The above components achieve the following effect: the protective plate is fixed on the buffer pad, and the buffer pad is fixed on the baffle.

[0023] In summary, the beneficial effects of this utility model are as follows:

[0024] In this invention, by means of an adjustment device, when the door needs to be opened or closed, the connecting rod is rotated around the rotating block as the axis, which drives the coaxial gear to rotate. The gear meshes and drives the rack to move laterally, which in turn drives the moving plate to slide through the connecting plate, causing the locking rod to exit from the lock hole of the door frame. After the door is released from the limit, the door can be opened. By rotating the connecting rod in the opposite direction, the gear drives the rack to reset, allowing the locking rod to be inserted into the lock hole of the door frame to complete the locking. Through the adjustment device, the problem of traditional high-sealing blast door devices, which basically adopt a single-point locking structure, is solved. When locking at a single point, the impact force (such as an explosive shock wave) is concentrated on a single locking point, causing the door to bear non-uniform load, which can easily cause local dents in the door or fatigue fracture at the welding point of the locking point.

[0025] In this invention, the protective device allows the door panel to bear the load and transmit it to the buffer pad when the impact force on the door needs to be reduced in advance. The buffer pad absorbs some energy through elastic deformation to achieve initial force relief, causing the retraction rod to contract and compress the spring for secondary attenuation. When the baffle drives the rubber plate to abut against the door, the rubber plate further absorbs energy through its high damping characteristics. This protective device solves the problem that traditional high-sealing blast door devices are not convenient for reducing the impact force on the door in advance, resulting in the impact force acting directly on the door and easily causing damage to the door. Attached Figure Description

[0026] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0027] Figure 2 This is a schematic diagram of the adjustment structure of this utility model;

[0028] Figure 3 This is a partial cross-sectional structural diagram of the three-dimensional structure of this utility model;

[0029] Figure 4 This is a schematic diagram of the protective structure of this utility model.

[0030] Legend: 1. Door frame; 2. Adjustment device; 201. Flange bearing; 202. Rotating shaft; 203. Gear; 204. Rack; 205. Connecting plate; 206. Moving plate; 207. Locking rod; 208. Rotating block; 209. Connecting rod; 210. Rubber groove plate; 211. Limiting hole plate; 212. Fixing plate; 213. Telescopic rod; 3. Protective device; 31. U-shaped plate; 32. Retractable rod; 33. Spring; 34. Baffle; 35. Buffer pad; 36. Protective plate; 37. Rubber plate; 4. Door leaf. Detailed Implementation

[0031] Reference Figure 1 and Figure 3As shown, this utility model provides a technical solution: a high-sealing air defense door device, including a door frame 1 and a door leaf 4, an adjustment device 2 is provided inside the door leaf 4, and a protective device 3 is provided on one side of the door leaf 4.

[0032] The specific settings and functions of its adjustment device 2 and protection device 3 will be described in detail below.

[0033] Reference Figure 2 As shown in this embodiment: the adjusting device 2 includes a flange bearing 201 and two racks 204. The arc surface of the flange bearing 201 is fixedly connected to the door leaf 4. A rotating shaft 202 is fixedly connected to the inner side of the flange bearing 201. A gear 203 is fixedly connected to one end of the rotating shaft 202. The outer side of the gear 203 meshes with the two racks 204. A connecting plate 205 is fixedly connected to one end of the racks 204. A movable plate 206 is fixedly connected to one end of the connecting plate 205. One side of the two movable plates 206 is slidably connected to the door leaf 4. Several locking rods 207 are fixedly connected to one side of the movable plate 206. The several locking rods 207 are evenly distributed on the movable plate 206. The arc surface of the several locking rods 207 is slidably connected to the door frame 1. A rotating block 208 is fixedly connected to one end of the gear 203. The rotating block 208 rotates, driving the gear 203 to rotate, which in turn moves the rack 204, causing the connecting plate 205 to move, and the moving plate 206 to move the locking rod 207 away from or towards the door frame 1. A connecting rod 209 is fixedly connected to the arc surface of the rotating block 208, ensuring the connecting rod 209 is fixed to the rotating block 208. A rubber groove plate 210 is interference-fitted to the arc surface of the connecting rod 209, with one side of the rubber groove plate 210 fixedly connected to the door leaf 4. This ensures the connecting rod 209 is fitted inside the rubber groove plate 210, preventing it from shifting. Two telescopic rods 213 are fixedly connected to one side of the moving plate 206, with one end of each telescopic rod 213 fixedly connected to a fixed plate 212, and one side of the fixed plate 212 fixedly connected to the door leaf 4. This ensures the moving plate 206 moves, causing the output ends of the telescopic rods 213 to extend or retract, preventing the moving plate 206 from shifting position during movement. Several locking rods 207 are slidably connected to limiting plates 211 on their arc surfaces, and one side of two limiting plates 211 is fixedly connected to the door leaf 4. This achieves the effect of matching the limiting plates 211 and the locking rods 207, preventing the locking rods 207 from shifting position during movement.

[0034] Reference Figure 4As shown in this embodiment: the protective device 3 includes a U-shaped plate 31, one side of which is fixedly connected to the door leaf 4. Four retractable rods 32 are fixedly connected to one side of the U-shaped plate 31, and baffles 34 are fixedly connected to the output ends of the four retractable rods 32. This achieves the effect of causing the output ends of the retractable rods 32 to retract under the force of the baffles 34. Springs 33 are fitted onto the arc surface of the retractable rods 32, and the two ends of the four springs 33 are fixedly connected to the U-shaped plate 31 and the baffles 34 respectively. This achieves the effect of preventing the springs 33 from deforming during the retraction process. Two rubber plates 37 are fixedly connected to one side of the baffles 34. This achieves the effect of fixing the rubber plates 37 to the baffles 34. A buffer pad 35 is fixedly connected to one side of the baffles 34, and a protective plate 36 is fixedly connected to one side of the buffer pad 35. This achieves the effect of fixing the protective plate 36 to the buffer pad 35 and the buffer pad 35 to the baffles 34.

[0035] Working principle: By adjusting device 2, when it is necessary to open or close door leaf 4, the operator first holds the connecting rod 209 and applies upward pushing force, causing the connecting rod 209 to disengage from the limiting groove of rubber groove plate 210, thus releasing the limiting constraint on the connecting rod 209. At this time, the connecting rod 209 rotates around the rotating block 208 as the axis, driving the coaxially mounted gear 203 to rotate synchronously. The gear 203 drives the rack 204 to move laterally through meshing transmission, thereby causing the connecting plate 205 fixed at the end of the rack 204 to slide along the moving plate 206. The translational movement of the moving plate 206 causes the locking rod 207 to move away from the door frame 1. When the locking rod 207 is completely withdrawn from the lock hole of the door frame 1, the mechanical limitation of door leaf 4 is completely released, thus realizing the opening action of door leaf 4 and closing action of door leaf 4. When the above-mentioned reverse operation is performed, the connecting rod 209 is rotated to make the gear 203 rotate in the opposite direction, the rack 204 drives the moving plate 206 to reset, and the locking rod 207 is inserted into the lock hole of the door frame 1 under the guidance. During this process, the moving plate 206 is supported and limited by the telescopic rod 213 to prevent the moving plate 206 from shifting position. At the same time, the locking rod 207 slides along the limiting hole plate 211 to ensure the accuracy of the movement trajectory of the locking rod 207. Finally, the door leaf 4 and the door frame 1 are reliably closed and locked. Through the adjustment device 2, the problem of traditional high-sealing air defense door devices, which basically adopt a single-point locking structure, is solved. When locking at a single point, the impact force (such as the shock wave of an explosion) is concentrated on a single locking point, causing the door leaf 4 to bear non-uniform load, which is very easy to cause local dents in the door leaf 4 or fatigue fracture at the locking point weld.

[0036] With the protective device 3, when it is necessary to pre-reduce the impact force on the door leaf 4, the operator first fixes the U-shaped plate to the force-bearing surface of the door leaf 4. When the impact force is applied, the protective plate 36 bears the impact load first and transmits the force to the buffer pad 35 behind. The buffer pad 35 absorbs part of the impact energy through its own elastic deformation, achieving initial force relief. The residual impact force after being reduced by the buffer pad 35 is transmitted to the retraction rod 32 and the spring 33 by the baffle 34. The retraction rod 32 retracts under the action of the impact force and compresses the spring 33 at the same time, achieving secondary impact attenuation. When the baffle 34 drives the rubber plate 37 to move to fully contact the surface of the door leaf 4, the rubber plate 37 further absorbs the impact vibration energy due to its high damping characteristics. With the protective device 3, the problem of traditional high-sealing air defense door devices being inconvenient to pre-reduce the impact force on the door leaf 4 is solved, resulting in the impact force acting directly on the door leaf 4 and easily causing damage to the door leaf 4.

[0037] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

Claims

1. A high-sealing air defense door device, comprising a door frame (1) and a door leaf (4), characterized in that: The door leaf (4) is equipped with an adjustment device (2) inside. The adjustment device (2) includes a flange bearing (201) and two racks (204). The arc surface of the flange bearing (201) is fixedly connected to the door leaf (4). A rotating shaft (202) is fixedly connected to the inner side of the flange bearing (201). A gear (203) is fixedly connected to one end of the rotating shaft (202). The outer side of the gear (203) meshes with the two racks (204). One end of the racks (204) is fixedly connected to... There is a connecting plate (205), one end of which is fixedly connected to a movable plate (206). One side of the two movable plates (206) is slidably connected to the door leaf (4). One side of the movable plate (206) is fixedly connected to a number of locking rods (207). The number of locking rods (207) are evenly distributed on the movable plate (206). The arc surface of the number of locking rods (207) is slidably connected to the door frame (1). One end of the gear (203) is fixedly connected to a rotating block (208).

2. The high-sealing air defense door device according to claim 1, characterized in that: The rotating block (208) has a connecting rod (209) fixedly connected to its arc surface.

3. The high-sealing air defense door device according to claim 2, characterized in that: The arc surface of the connecting rod (209) is interference-fitted with a rubber groove plate (210), and one side of the rubber groove plate (210) is fixedly connected to the door leaf (4).

4. The high-sealing air defense door device according to claim 3, characterized in that: Two telescopic rods (213) are fixedly connected to one side of the movable plate (206). One end of the two telescopic rods (213) is fixedly connected to the fixed plate (212), and one side of the two fixed plates (212) is fixedly connected to the door leaf (4).

5. A high-sealing air defense door device according to claim 4, characterized in that: The arc surfaces of several locking rods (207) are slidably connected to limiting holes (211), and one side of two limiting holes (211) is fixedly connected to the door leaf (4).

6. A high-sealing air defense door device according to claim 5, characterized in that: A protective device (3) is provided on one side of the door leaf (4). The protective device (3) includes a U-shaped plate (31). One side of the U-shaped plate (31) is fixedly connected to the door leaf (4). Four retractable rods (32) are fixedly connected to one side of the U-shaped plate (31). A baffle (34) is fixedly connected to the output end of the four retractable rods (32).

7. A high-sealing air defense door device according to claim 6, characterized in that: The arc surface of the retractable rod (32) is fitted with springs (33), and the two ends of the four springs (33) are fixedly connected to the U-shaped plate (31) and the baffle (34) respectively.

8. A high-sealing air defense door device according to claim 7, characterized in that: Two rubber plates (37) are fixedly connected to one side of the baffle (34).

9. A high-sealing air defense door device according to claim 8, characterized in that: A buffer pad (35) is fixedly connected to one side of the baffle (34), and a protective plate (36) is fixedly connected to one side of the buffer pad (35).

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